水泥混凝土桥面防水黏结层材料优选  

Optimization of Waterproofing Adhesive Layer Materials for Cement Concrete Bridge Deck

作　　者：邱文利 张少波 陈攀 邱爽 符刘旭 陈先华[2] QIU Wen-li;ZHANG Shao-bo;CHEN Pan;QIU Shuang;FU Liu-xu;CHEN Xian-hua(Hebei Xiong’an JingXiong Expressway Co.Ltd.,Baoding 071000,China;School of Transportation,Southeast University,Nanjing 210096,China)

机构地区：[1]河北雄安京德高速公路有限公司,保定市071000 [2]东南大学交通学院,南京市210096

出　　处：《公路》2023年第3期21-27,共7页Highway

基　　金：河北省交通运输厅科技项目,项目编号JD202004。

摘　　要：层间特性显著影响水泥混凝土桥面铺装的服役性能,考虑到防水黏结层材料品种繁多、性能差异较大,优选出适用于精品工程建设的防水黏结层材料并进行针对性优化的工作仍有待进一步研究。基于此,选取橡胶沥青、水性环氧沥青以及多介质复合防水黏结层材料进行综合比选,首先成型包含不同防水黏结层材料的复合试件,然后进行室内拉拔、剪切以及疲劳试验,通过对不同防水黏结层材料的层间特性进行对比分析得出综合性能优异的防水黏结层材料,最后对优选出的防水黏结层材料组成进行针对性的优化。结果表明,多介质复合防水黏结层在常温和高温条件下均具有最高的剪切强度和拉拔强度;此外,多介质复合防水黏结层具有最高的疲劳寿命。在此基础上,考虑双组分反应性树脂、橡胶沥青和单粒径碎石含量对复合试件剪切强度和拉拔强度的影响,基于响应曲面法对多介质复合防水黏结层的材料组成进行了优化。优化后的材料组成为:双组分反应性树脂洒布量为1.2 kg/m^(2),橡胶沥青洒布量为1.5 kg/m^(2),碎石撒布量为7.8 kg/m^(2)。The interlayer properties significantly affect the service performance of cement concrete bridge decks.Considering the wide variety of waterproofing adhesive layer(WAL)materials and the wide variation in performance,further research is required to select and optimize the WAL materials suitable for the construction of high-quality projects.Based on this,the commonly used WAL materials in project construction that contain rubber asphalt,water-based epoxy asphalt and multi-media composite WAL are selected for a comprehensive comparison.Firstly,composite specimens containing different WAL are prepared,then indoor pull-out,shear and fatigue tests are carried out to compare the interlayer properties of the different WAL materials to find the best overall WAL material,and finally,the selected WAL material is optimized.The results show that the multi-media composite WAL exhibits the highest shear and pull-out strengths at both ambient and high temperatures,and also exhibits the highest fatigue life.On this basis,considering the impact of two-component reactive resin,rubber asphalt and single-size crushed stone content on the shear and tensile strength of composite specimens,the material composition of the multimedia composite WAL is optimized using the response surface method,and the optimized material composition is 1.2kg/m^(2) for the two-component reactive resin,1.5kg/m^(2) for the rubber asphalt and 7.8kg/m^(2) for the crushed stone.

关 键 词：道路工程 防水黏结层 层间界面特性 室内试验 材料优化 响应曲面法 

分 类 号：U443.33[建筑科学—桥梁与隧道工程] TU571[交通运输工程—道路与铁道工程]